One can imagine a variety of possible chargegenesis scenarios (see also Ref. [1]}).
Scenarios that predominantly result in the production of a charge asymmetry in right-handed electrons or muons may, e.g., be referred to as electrogenesis and muogenesis, and so on and so forth.
Among these various possibilities, we focused on a particularly attractive option in this paper: axion inflation coupled to the SM hypercharge gauge sector.
The nonperturbative dynamics of this model lead to the exponential amplification of the hypercharge gauge field in one of its two helicity states, which in turn results in fermion production from the strong gauge-field background.
As a consequence, axion inflation coupled to the hypercharge gauge sector leads to the dual production of maximally helical hypermagnetic fields and a set of fermionic charge asymmetries,
\(q_{\rm CS} \,, \qquad q_e \,, \qquad q_{u-d} \,, \qquad q_\mu , \qquad q_\tau \,, \qquad q_B \,, \qquad q_u \,,\) 
